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<h1 class="topictitle1">存储层快照全量备份任务失败，错误详情包含“创建LUN快照失败”</h1>
<div><div class="section"><h4 class="sectiontitle">现象描述</h4><p>Oracle存储层快照全量备份任务失败，错误提示包含“创建LUN快照失败”，错误详情包含LUN ID。</p>
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<div class="section"><h4 class="sectiontitle">可能原因</h4><p>错误详情里显示的待备份的LUN已加入的保护组数量达到了最大限制（同一个LUN最多同时加入8个保护组）。</p>
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<div class="section"><h4 class="sectiontitle">处理步骤</h4><ol><li><span>登录生产环境OceanStor Dorado存储的DeviceManager管理界面。</span></li><li id="oracle_gud_0150__li10949142772018"><a name="oracle_gud_0150__li10949142772018"></a><a name="li10949142772018"></a><span>选择导航栏<span class="uicontrol">“服务 &gt; 块服务 &gt; LUN组”</span>，在<span class="uicontrol">“LUN”</span>页签下，找到错误详情中的ID对应的LUN。</span><p><div class="note"><img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span><div class="notebody"><p>如果错误详情中有多个LUN ID，请对每个ID对应的LUN执行后续步骤。</p>
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</p></li><li><span>单击LUN的名称，打开LUN详情页。</span></li><li id="oracle_gud_0150__li04441340134110"><a name="oracle_gud_0150__li04441340134110"></a><a name="li04441340134110"></a><span>在保护页签下，选择<span class="uicontrol">“快照”</span>，打开快照详情页，获取<span class="uicontrol">“所属快照一致性组”</span>的信息。</span></li><li id="oracle_gud_0150__li11378225134717"><a name="oracle_gud_0150__li11378225134717"></a><a name="li11378225134717"></a><span>选择导航栏<span class="uicontrol">“数据保护 &gt; 对象 &gt; 保护组”</span>，在<span class="uicontrol">“快照一致性组”</span>页签下，找到<a href="#oracle_gud_0150__li04441340134110">4</a>获取的<span class="uicontrol">“所属快照一致性组”</span>对应的<span class="uicontrol">“保护组”</span>信息。</span></li><li><span>在<span class="uicontrol">“保护组”</span>页签下，找到<a href="#oracle_gud_0150__li11378225134717">5</a>获取的<span class="uicontrol">“保护组”</span>，点击对应名称，在<span class="uicontrol">“成员”</span>页签下，选中<a href="#oracle_gud_0150__li10949142772018">2</a>种获取的LUN名称。</span><p><div class="note"><img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span><div class="notebody"><p>请确保选中的LUN可以从保护组中移除。当保护组名称前缀为“protect_group”时，可能是备份任务自动创建的保护组，请联系技术工程师确认该保护组是否可以移除。</p>
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</p></li><li><span>单击<span class="uicontrol">“移除”</span>。</span></li></ol>
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